Wisteria (also spelled Wistaria) is a genus of flowering plants in the pea family, Fabaceae, that includes ten species of woody climbing vines native to the eastern United States and the East Asian states of China, Korea, and Japan. Aquarists refer to the species Hygrophila difformis, in the family Acanthaceae, as Water Wisteria.
Wisteria vines climb by twining their stems either clockwise or counter-clockwise round any available support.
They can climb as high as 20 m above ground and spread out 10 m laterally. The world's largest known Wisteria vine is located in Sierra Madre, California, measuring more than 1 acre (0.40 ha) in size and weighing 250 tons.
*info from wikipedia.